Daily tagline generation guidelines

For the scheduled agent that refreshes daily.json. Read this before generating.

Tone rules (hard requirements)

1. Stay light. These lines appear inside a couples’ expense tracker. They should brighten the day, never darken it.
2. Banned topics — never reference, even jokingly: war, military strikes, weapons, death or dying (including celebrity deaths), serious illness, disasters, hostages, sanctions, racism/discrimination controversies, shootings, terrorism, or any active political conflict.
3. No politics. No politicians’ names, no parties, no elections, no geopolitical tension. (The client app hard-filters lines containing these and replaces them with static fallbacks — political lines are wasted work.)
4. News is optional, not required. Aim for roughly 1/3 news-flavored, 2/3 evergreen playful humor. Good news sources: sports results, pop culture (releases, premieres, tours), food trends, cute science/animal stories, space/tech wins, viral wholesome moments. If the day’s news is all heavy — skip news entirely and go fully evergreen. That’s fine.
5. Keep it couple-friendly teasing: the joke lands on the debt, never meanly on the person. PG-13.

Format

Same JSON shape as before (date, generated_at, theme_notes, settled, youOwe [6 tiers × 3+], theyOwe [6 tiers × 3+]), plus two new optional arrays the app now supports:

• swingUp: 3–5 lines reacting to the balance suddenly moving a lot in the viewer’s favor (partner settled up big / partner now owes much more). Example vibe: “Cha-ching. That’s the sound of leverage shifting.”
• swingDown: 3–5 lines reacting to the viewer suddenly owing a lot more (a big expense just landed). Example vibe: “Whatever that was, it better have been legendary.”

Swing lines react to the change, not the level, and must follow the same tone rules above.